MDT1051

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P.2

2005/6

Ver. 1.9

4. Pin Assignment

DIP / SOP

PA2/AIC2 1

18

PA1/AIC1

PA3/AIC3 2

17

PA0/AIC0

PA4/RTCC 3

16

OSC1

/MCLR 4

15

OSC2

14

PB0/INT 6

13

PB7

PB1 7

12

PB6

PB2 8

11

PB5

PB3 9

10

PB4

SSOP

PA2 1

20

PA1

PA3 2

19

PA0

RTCC 3

18

OSC1

/MCLR 4

17

OSC2

VSS 5

16

VDD

VSS 6

15

VDD

PB0 7

14

PB7

PB1 8

13

PB6

PB2 9

12

PB5

PB3 10

11

PB4

5. Pin Function Description

Pin Name

I/O

Function Description

PA0~PA3

I/O

Port A, TTL input level / Analog input channel

PB0~PB7

I/O

Port B, TTL input level / PB0:External interrupt input ,

PB4~PB7:Interrupt on pin change

RTCC/PA4

I/O

Real Time Clock/Counter, Schmitt Trigger input levels

Open drain output

/MCLR

I

Master Clear, Schmitt Trigger input levels

OSC1

I

Oscillator Input

OSC2

O

Oscillator Output

Power supply

Ground

6. Memory Map

(A) Register Map

Address

Description

BANK0

00

Indirect Addressing Register

01

RTCC

02

PCL

03

STATUS